Juan s



@MMI tetra @anni ffire.

,to be dove-tailed. The horizontal platform A in like manner receivesthe lumber to form the pins.

JUAN S. L. BABES, OF NEW ALBANY, INDIANA.

Letters Patent No. 60,843, dated January 1, 1867.

IMPROVEMENT IN DOVE-TAIL MACHINES.

TO ALL WHOM IT MAY CONCERN:

Be it known that I, JUAN S. L. BABES, of the city of New Albany, in thecounty of Floyd, and State ofIndiana, have invented a' new and usefulImprovement on the Hartwell Patent Dove-Tail Machine, patented March 22,1864; and I do hereby declare that the following is a full, clear,l andexact description of the construction .and operation of the same,reference being had to the annexed drawings, making a part ofthisfspecication, in which- Figure 1 is a front perspectiveview.

Figure 2, a back perspective view; and

Figure 3 is a perspective view of the T-bit for making a T-lock joint inthe construction of drawersy and boxes.

The nature of my improvement on the Hartwell patent dove-tail machineconsists in thc manner and construction of my method of overcoming thelimited capacity. of the box, as arranged on said machine, by thesubstitution of my open platforms, A A, which admit lumber o' all widthsto be dove-tailed, and allow it to pass free right or left, as required,when applied to the Hartwell machine. The perpendicular platform Areceives the lumber fasts or clamps, B13, are adjustable, and used onboth platforms to hold the lumber while the cutters are at work, incombination with the said holdfasts. The adjustable blocks, C C, are soarranged to work on a screw on the end of the piston-rods that they maybe set to hold'diiYerent thicknesses of lumber while being cut. Alsotheapplication of the four spring check gauges, D D D D, placed inslots, adjustable right or left, as required, held fast by means ofthumb-nuts, Said gauges project out,l by the force of a spring,one-fourth of an inch, for the purpose of checking and gauging themarked edge of the lumber for the first cuts. Theidle gauges, when notin use, will fall back, giving the lumber a free bearing on theplatforms. Also th'e manner'of constructing and arranging the graduatinggauge-tits, E E, placed on each sideof the cutters,.F F F, projectingout by the force of a spring; said tits corresponding in height anddiameter exactly with the cutters, for the purpose of graduating andreceiving the right or left mortise made by each operation of thecutter. The idle gauge E and the check gauges D D drop back by thepressure of the lumber, and so give it a free bearing. The match gaugesG G, and the rule gauges H H, are for matching the lumber of differentWidths to be dove-tailed or otherwise, and in combination with thegraduating gauges E E, all widths and lengths of lumber can bedove-tailed or other- Wise. Also theA application and usev of the T-bitor cutter, in combination with my open platforms, for the purposeofmaking a T-lock joint, for the same purposes for which dove-tails are'used in the construction of drawers, boxes, tc., &c., lite.

I. I claim none of the motions or arrangements of the Hartwell patentdove-tail machine; but I do claim the construction and larrangement ofthe two platforms A A, when applied in combination to the Hartwellpatent dove-tail machine, or its equivalent, substantially as and forthe purposes herein described.

2. I do not claim the holdfasts or clamps B B; but I do claim the use of said holdfasts or clamps, in combination with thel adjustable blocks CC, as applied to the combined platforms A A, when arranged and operatingas andfor the purposes herein described.

3. I claim-'the use of the four spring check gauges D D D D, incombination with the platforms A A, Asub` stantially as arranged, andfor the purposes as herein described.

4. I claim the construction `and arrangement of the two graduatinggauge-tits E E, in combination with the combined platforms A A,operating substantially as arranged, and for the purposes as hereindescribed.

JUAN S. L. BABBS.

Witnesses:

D. R. Sco'r'r, THOMAS G. Moxmson.

The hold-l

